What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Please share to us the URL of your form that was having the issue. It will also help us understand more about the problem if you can provide us with more details what specifically is NOT working on the Calendar.
In case this was about the same issue on your original post here http://www.jotform.com/answers/610141-The-Date-Reservation-Widget-Date-Format-is-not-correct
I have already responded to it. Please refer to that thread for any updated/follow up message you have.